sql server 使用系统表查询数据库表结构信息

zhouandtao

SELECT
表名       = Case When A.colorder=1 Then D.name Else '' End,
表说明     = Case When A.colorder=1 Then isnull(F.value,'') Else '' End,
字段序号   = A.colorder,
字段名     = A.name,
字段说明   = isnull(G.[value],''),
标识       = Case When COLUMNPROPERTY( A.id,A.name,'IsIdentity')=1 Then '√'Else '' End,
主键       = Case When exists(SELECT 1 FROM sysobjects Where xtype='PK' and parent_obj=A.id and name in (
SELECT name FROM sysindexes WHERE indid in( SELECT indid FROM sysindexkeys WHERE id = A.id AND colid=A.colid))) then '√' else '' end,
类型       = B.name,
占用字节数 = A.Length,
长度       = COLUMNPROPERTY(A.id,A.name,'PRECISION'),
小数位数   = isnull(COLUMNPROPERTY(A.id,A.name,'Scale'),0),
允许空     = Case When A.isnullable=1 Then '√'Else '' End,
默认值     = isnull(E.Text,'')
FROM
syscolumns A
Left Join
systypes B
On
A.xusertype=B.xusertype
Inner Join
sysobjects D
On
A.id=D.id  and D.xtype='U' and  D.name<>'dtproperties'
Left Join
syscomments E
on
A.cdefault=E.id
Left Join
sys.extended_properties  G
on
A.id=G.major_id and A.colid=G.minor_id
Left Join
sys.extended_properties F
On
D.id=F.major_id and F.minor_id=0
--where d.name='OrderInfo'    --如果只查询指定表,加上此条件
Order By
A.id,A.colorder